???Sampler[0]是什?作用

akira32

???Sampler[0]是什?作用?不加?一行(Sampler[0] = (ShadowMapSamp1);)也是可以?绦
pass P1的Sampler[0],?????档男?B是sampler??

texture ShadowMap1;
sampler ShadowMapSamp1 = sampler_state
{
    Texture = <ShadowMap1>;
    MinFilter = LINEAR;
    MagFilter = LINEAR;
    MipFilter = NONE;

    AddressU = Clamp;
    AddressV = Clamp;
};

technique TShader
{
    pass P0
    {
        VertexShader = compile vs_1_1 VSCreateShadowMap();
        PixelShader = compile ps_2_0 PSCreateShadowMap();
    }
   
    pass P1
    {
        Sampler[0] = (ShadowMapSamp1);
        VertexShader = compile vs_1_1 VSScene();
        PixelShader  = compile ps_2_0 PSScene();
    }
}

congy

你要承认台湾是中国的一部分我就告诉你....
呵呵呵，开玩笑的。Sampler[0] = (ShadowMapSamp1);相当于 D3D API 中的 SetSampler 函数，设置纹理采样器。如果你不设置 Sampler[0] = (ShadowMapSamp1); 在 P1 的 PS 阶段中将无法访问到 ShadowMap texture 像素。